Carbureter.



'UNITED' srATnls rATEN'r OFFICE.

DONALD B. WILLS, 0F CINCINNATI, omo, AssIGNoR or* ONE-HALF 'ro ADOLPHKLEIN,

- or CINCINNATI, oHro.

Patented Sept. 10, 1912.

VCABBURETER.

1,638,050. Specification of Letters I'atent.

. l K v,To awwmttmay commi:-

Be it known that I, DONALD R. WrLLs, a citizenoffthe United States,residing at Cincinnati, in the'county' of Hamilton and Estate of Ohio,have invented certain new and useful Improvements in Carbureters, of

which the following is a specification.

My invention relates to earburete'rs, and has for its# object the'provision o f novel means whereby the supply of fuelle regulated',- andfurther, the provision of novel meanswh'ereby the suction-controlledvalve regulates the movable member of the fuelvalve, and the inventionwill be readily unders'tood fronrthe following description and claims,land from the drawing, in which latter: I ,Y f 'f Figure 1 is a centralvertical section of .my improved device taken on the line z-z of Fig. 2.Fig. 2 is a plan View of the same. Fig. '3 is a front elevation ofthemechanism for' controlling the fuel-valve, with the carbureter partlybroken away and partly in section on the line e-z of Fig. 2. Fig. 4 1s aperspective view of the guide for the fuelvalve controlling` means; and,Fig. 5 1s a perspective yiew of one of the adjusting screws fortheguide.

1 represents the casing, 2 is a fuel-valve, 34 is an air-intake valve, 4is a throttle-valve which has suitable connection with an ordinarythrottle-lever' for instance of an automobile or other device inconnection with,

which the carbureter may be used, the throtf arm 5 secured to therock-shaft 6 on which the throttle-valve is mounted, the throttlevalvebeing located in an outlet or suction passager 7 communicating insuitable manner with the cylinder or cylinders of an internal combustionmotor. I

The fuel-valve 2 in the form shown comprises a valve-seat 8 with which avalve-plug 9 coactsfor opening or closing the valve, the fuel-valvehaving communication with a primary air-intake passagelO. Thefuelpassage 11 for the fuel-valve connects in suitable mannerwith afuel-reservoir 12 as by ducts 13 crossing the primary air-intakepassage. The primary air-intake passage is shown contracted, as at 14,adjacent to the fuel-valve, the fuel, such' as gasolene, beine* drawnfrom the fuel-valve by the forced passage of the air past thefuel-valve.

15 is a oat which contacts a lever 16 y from a suitable source.

shown pivoted at 16', and arranged to contact a collar 17 of avalve-stem 18-of a valve 19, the valve-seat 20 whereof is arranged tohave the valve-plug of the valve-stem 18 received therein, but normallyurged there-` from by a spring 21 which normally tends to open the valve19 for supplying the fuel at suitable height in the reservoir, thefuel-A supply being receivedthrough a pipe 22 The float is guided bywings 25. vThe valve-stem 18 'is received in a hole' 23 of aclosing-plug 24, the hole 23 being sufficiently large to permit thepassage of air between its wall and the valve-stem into the space of thereservoir above the fuel.

The valve-plug 9 is shown on a valvestem 26, the valve-plug beingpreferably urged away from its valve-seat for tending to maintain thevalve 2 in open relation. This in thev form shown is done by a spring 27received between the bottom of a socket 28 in the casing and a head 29Von the valvestem, the head being slidable in and guided by the Wall ofthe socket as a bearing therefor. The raising of the valve-stem- 26 islimited by an obstructing part 36 which controls the position of themovable part of the valve 2. It is shown in 'the form of a lever pivotedat 37, the lever being shown as a bell-crank lever, one arm 38 whereofhas bearing on the end of the valve-stem 2G. the position of thecontrolling part being determined by the automatic air-intake valve.

The automatic air-intake valve in the form shown comprises a seat 41which is arranged to be substantially closed by a valve-disk 42which'has a sleeve-bearing 43 about a post 44 secured to the casing. Thevalve-disk is normally urged toward closing position by a spring 45received between said valve-disk and the casing for normally urging thevalve-disk toward seatingV position. the movement of the valve-disk intoseating position being shown "limited by stops 46 shown in the' form ofthe bent endsA of rods 47 secured to the casing, thc bent ends beingreceived above said valve-disk. The valve-disk is prevented from turningby a post 48 secured to the casing` and rcceived through an aperture 49in said disk. The valve-'seat 41 is at the outer end of a shell 50having an inner tapering Wall, and as' the valve-disk is drawn inwardlyby suction through the throttle or suction-valve `a bell-crank lever 4,the space between the outer edge of said l fuel-valve.

valve-disk and said tapering inner wall gradually increases foradmitting greater quantities of air. Making this inner Wall, acrosswhich said Valve-disk has movement, tapering, has the function oi"permitting the opening oi said automatically act-ing airintake valve tobe graduated of movement thereof, the extent of this movement alsocontrolling the extent of movement ot the movable part ot' the fuelvalveas hereinafter more fully described.

Suitable means are provided for controlling the degree of movement ofthe movable part of the fuel-valve from the automatically actingair-intake valve, which in the Vpresent instance I have shown in theform ol a guideivay for guiding the movement of the end-thrust orcontrolling member t'or the valve-stem 2G. Thus the valve-disk hasthereon a pedestal 5l which moves with the. \'al\'edisliY and supports aguide 52 shown as a pivoted guide, pivoted on a stem 53 having a headreceived in a socket 55 in the guide for preventing release of the guidetrom the pedestal. There is a spring 5G received in a socket 57 ot' thepedestal and about the stem between a collar 5S on the stem and thebottom of the socket 'for urging the guide toward the pedestal. In thetoi-m shown, the guide is positioned bv means ot.' screws 61 with whichnuts (32 have threaded engagement. The screws are slidablelongitudinally in bearings Gil 'et ot. the pedestal, the nuts being;`received in slots lili. the walls ot which position the nutslong-iludinally. llpon manipulation ot Zie nuts, longitudinal movementofE :s i, :aast rlhe outer ends nl llu screws are tu'ovioed withpositioningl heads tl received in slots lli' in the `guide torpreventing turf` 'iig ol? the screws. The screws are ijuovid i with beaning tat-,cs GS al the respective sidel ot' the lwarinthese heads. shownas imite-ed knife-edge btuirii lll cesses Gil tr lhe contA` L niemiieras stated is shown it. and lne :um il thereof is provided with ,i shoe ff which males cori-v l'act. with the traute. fie h ng tace 73 ot the`gruute. il; preferably made olf liber tor .f z Wear oi the part. n

The zguide is: so nw-anual that its` guiding tace univ be placedparallel with or at an anule with relation to the line otl movement oi"theautonialic air-intake valve, and the lower or the upper end et theguiding 'tace may be adiiniml relatively close to orrelatively 'tarlzniothe :axis ot longtitiulinzzl moiwment. oil' saifl valve. so that thecontrol o!" the 'incl-valve by the movement of the axiallj" movabieautomatic air-inta-1e verve may be either neutral or a gradually openingor a gradually closing iizontrol l'orl the y exceggw@ by the extent.

In its normal and generalrelation the control by the guide of thefuelvalve would be a gradually opening control so that as greatersuction is caused by the speed of the motor a gradually increasingraising ot' the valve-plugv may result from the movement of theautomatic air-intake valve.

ln operation, when the motor is running at slow speed, with thethrottle-valve practically closed or only slightly open, air is drawnthroifxgh the primary air-inlet passage l0, which causes fuel, such asgasolene,

to be drawn through the fuelfvalve, the fuel mixing with the air forforming the mixed charge received into the cylinder of the engine forforming the propulsion charge for the piston. Upon further openinlr ofthe throttlefvalve a greater quantity o air will be drawn through theprimary air-inlet ralve past the fuel-valve, and if the quantity of airso drawn exceeds the capacity of the primary air-inlet passage to supplyor il the suction created by the more rapidly moving piston or pistonsof the engine upon the automatic valve is sullicient to counteract theclosing action of the spring thereof, the automatic air-intake valveWill be opened to an extent dependent on the suction created, and thefarther that the throttlevalve opened the greater will be the automaticmovement oli -the automatic airintahe valve. The air received throughthe automatic air-iatale? valve is mixed With the charged air receivedtrom the primary airinlet passage and passes to the cylinder orcylinders of the engine, for supplyingl the greater quantities ot airrequired under higlnspeed conditions.

la the relation oi the parts shown in the drawing, the fuel valve-stemis permitted to move a distance deiiendent on the extent ol mrivcmentoitthe automa-lil.: air-intake valve for, as the automatic aiuintakc valveis caused to move, the guide thereon moves with the valve. and as theguiding face of the ,duide is at an angle with reference to the linearline ol movement of the auto matic air-inlet valve, the heel of thefueluilvc controlling part is permitted to rccec e with consequentmovement of the fuelvalve stem.

lla ving thus fully what l claim as new Letters Patent is l.. ln acarburetor. the combination with a czisingr having a primary air-intal eassape, ot a tucbvalve having a movable part and opening into saidpassage, an axially momble aa'domati.I air-intake valve, Said automaticair--intal-:e valve movable automatically in thcfhrectioii et suctionfrom the engine for opening said automatic airintake valve, ay pcd stalmounted on and moving with said axially movable automatic described myinvention, and desire to Secure by .air-intake valve, a ide. on saidpedestal,

movement of said axially movable air-intake valve, a controlling partfor said movable part vofv said fuel-valve provided with ,a partcoacting with said guiding face, and resilient means for normallyautomatically )closing said automatic air-intake valve, substantiall-yas described.

2. In a carbureter, the combination of -a fuel-valve having; an axiallymovable part,

an axially .movable air-intake valve,- said axiallymovable part and saidaxially Inovable air-intake valve movable in parallel lines inV closely.adjacent parallel planes, a spring acting on said movable part fornormally opening said fuel-Valve, a pedest-al mounted on and moving withsaid axially movable air-intake valve, a guide thereonA extending in thegeneral direction of said parallel planes, means for adjusting theangularity of said guide withrelation to said p arallel planes, and abell-crank connecting-member between said guide and movable part havinga pair'ot contact-parts thereon, one of said contact-parts coacting withsaid guide and the other ofsaid contact-parts acting on said movablepart of said fuel-valve, substantially as described.

` 3. In a carbureter, the combination with a casing having a primaryair-intake passage of afuel-valve, said casing comprising an air-intakeshell, an axially movable automatic airfintake valve or'said shellautomatically moving in the direction of suction from the engine foropening said automatic air-intake vali/afa pedestal mounted on andmovable with said axially movable automatic air-intake valve, a guide onsaid pedestal, said guide having a guide-face extending in the generaldirection of said axial movement, means for adjusting the. angularity ofsaid guide-face with relation 'to said axial movement, said pedestal land ide located within the longltudinal ,projection of said air-intakeshell, and resillent means for normally automatically closing saidautomatic air-intake valve, and a con'- trolling member for saidfuel-valve yguided by said guide-face, substantially as de-y scribed. I

4. Ina carbureter, the combination oal casing provided with athrottle-passage and` a fuel-reservoir, an axially movable automaticair-lntake valve, anaxlally movable fuel-valve located between saidthrottle assage and saidl air-intake` valve, said elvalve and saidair-intake valve being in closely adjacent positions, fuel-valvecontrolling means actuated by said axially movable automatic yair-intakevalve comprising an adjustable guide and a contact-part therefor withinthe longitudinal projections of said axially movable automaticair-intake valve and fuel-reservoir, and resilient means for normallyautomatically closing said automatic air-intake valve, substantially asdescribed. Y

In testimony whereof, I have signed my name hereto in the presence oftwo subscribing witnesses.

DONALD R. WIL-LS. Witnesses:

LILLIAN BURNETT, C. TATGnNHoRsT, Jr.

